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Finding the Fourth Proportional to 111,987.20, 167,980.80 and 33,102.20

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Solution

The fourth proportional to 111,987.20, 167,980.80 and 33,102.20 is: 49,653.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,987.20 : 167,980.80 = 33,102.20 : x
  2. Step 2: Convert to fraction form
    111,987.20/167,980.80 = 33,102.20/x
  3. Step 3: Cross multiply
    111,987.20x = 167,980.80 × 33,102.20
  4. Step 4: Simplify right side
    111,987.20x = 5,560,534,037.76
  5. Step 5: Solve for x
    x = 5,560,534,037.76/111,987.20
  6. Step 6: Final answer
    x = 49,653.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.